Hydraulic-elevator stop mechanism.



K. E. O. JANSSON.

HYDRAULIC ELEVATOR STOP MECHANISM.

APPLIOATION FILED APR. 22, 1908.

1,1 02,587, Patented July 7, 1914.

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K. E. O. JANSSON. EYDRAULIG ELEVATOR STOP MECHANISM.

APPLICATION FILED APR. 22. 1908,

1,102,587, Patented July 7, 1914.

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UNITED STATES PATENT OFFICE.

KARL E. OSS IAN JANSSON, 0F FLUSHING, YORK, ASSIGNOR TO STANDARD PLUNGER ELEVATOR COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

HYDRAULIC-ELEVATOR STOP MECHANISM.

To all whom it may concern:

Be it known that I, KARL E. OSSIAN JANssoN, a citizen of the United States, residing at Flushing, in the county of Queens and State of New York, have invented certain new and useful Improvements in Hydraulic-Elevator Stop Mechanism, of which the following is a full, clear, and exact specification.

This invention relates to hydraulic elevator stop valve mechanism, and has particular reference to a valve actuating mechanism for stopping an elevator car at the ends of its travel, wherein a plurality of ropes are provided running with the car, so disposed as to be taken up by a stationary device as the car approaches the respective ends, and thereby actuate the stop mechanism.

The object of this invention is to provide an arrangement of running ropes whereby the total length of rope required is shortened, and furthermore, to do away with the use of running sheaves and also to permit of the disposal of fixed take-up devices at the bottom of the hatchway adjacent the stop valve itself.

The invent-ion will be more fully understood in connection with the description of the accompanying drawings, wherein Figure 1 represents somewhat diagrammatieally in elevation an elevator system embodying the invention; Fig. 2 illustrates a stop valve with separate supply and exhaust passages, and separate valves for each passage, which may be used wit-h my independent valve actuating means shown in Fig. 1.

1 represents an elevator car mounted on a plunger 2 which plunger works in the main cylinder 3 in the usual manner. The main cylinder 3 has a to-and-from pipe 5 which is connected with the stop valve casing 6, which stop valve has an inlet pipe 7 and an exhaust pipe 8 respectively connected to the usual change valve, not shown. Connected on the bottom of the car running vertically therefrom is a rope 15 passing around the movable sheave 16 having a weight 17, thence running vertically over fixed sheave 18, under a second fixed sheave 19 and thence inclined upwardly to the counterweight 20 which latter is connected with the car by counterweight cable 21 running over overhead sheaves 22 in the usual Specification of Letters Patent.

Application filed. April 22, 1908.

Patented July 7, 1914:.

Serial No. 428,655.

manner. The counterweight also has takeup devices 23 for both ropes. This mecha nism forms a stop mechanism for actuating a valve 35 in the casing 63, shown in Fig. 2, through a lever 25 on which the weighted sheave 16 is mounted. The lever 25 is carried by a rock shaft 26 having a bearing in the stop valve casing 6 and the shaft suitably connected within the casing with the stop valve stem 36 and closing the supply when actuated. When the car is at the bottom of the hatchway, the rope 15 is relaxed by reason of the small angular deflection of the inclined section of the rope 15 from the vertical, the Weight 17 therefore holding the valve 35 open and the lever 25 in its lower position. As the counterweight comes down, the angle between the inclined portion of the rope 15 and the vertical continually increases so that as the counterweight approaches the bottom; the inclined section of the rope running over the fixed sheave 19 commences to take up, lifting the lever 25 and rocking the shaft 26 to close the supply valve 35 connecting the pipe 7 with the toand-from pipe 5. It will thus be seen that this mechanism avoids the use of sheaves running with the car, or carried on the car, or sheaves at the top of the hatchway over which the ropes run, all of which features are found in the running rope mechanism in common use. It is advantageous to have the length of running rope as short as possible and running over as few sheaves, because thereby the stretch is reduced, and consequently the amount of adjustment and takeup required to be given the rope to account for this stretch. Furthermore, the adjustments can be made at the bottom of the shaft, take-ups as turn-buckles 23 or the like being provided on the car or on the counterweight. In order to close up the exhaust, a second cable 30 is connected to the car and runs downward over a sheave 31, thence over a second movable weighted sheave 32 and thence vertically upward to the counterweight 20. The movable sheave 32 has a weight similar to 17, and is mounted on a lever 33 which is connected to a rock shaft 34. The rock shaft 34 is connected wit-h an exhaust stop valve 37 controlling the passage between the pipe 8 and pipe 5.

So far as I am aware, it is new to provide in combination, a plurality of running ropes connected between the car and counterweight, fixed take up sheaves located at the bottom of the hatchway for stopping the car at both top and bottom, and a separate valve for each rope. With some of the arrangements heretofore suggested, in case the valve should stick, taking up the rope simply lifts the weights and does not move the valve at all, and thus not producing any stopping effect on the car. With this invention, the valve is bound to move unless/the rope breaks and the weight cannot be lifted without moving the valve.

Having thus described my invention, I declare that what I claim as new and desire to secure by Letters Patent, is, V

1. The combination with an elevator car, a counterweight, and separate terminal stop devices for the respective ends, of a plurality of ropes connected between the car and the counterweight, stationary means at the bottom of the hatchway for causing a deflection of one of said ropes when the car and counterweight are respectively at the bottom, a plurality of weighted sheaves, one of which is lifted by aloop of each rope when deflected by the car or counterweight, and lever actuating connections between said weighted sheaves and the respective terminal stop devices.

- 2. The combination with a car and a counterweight, of a stop valve having sepa-' rate supply and exhaust passages, separate valves for each passage, independent actuating connections for each valve including each a movable sheave, a plurality of ropes connected between the car and counterweight and each looped around one of said sheaves, and stationary deflecting means for each rope at the bottom of the hatchway, whereby one or the other of said ropes will be deflected by the car or counterweight at the bottom.

3. The combination with an elevator car and a counterweight, of a terminal stop device, a stationary deflecting device, a movable sheave disposed at the bottom of the hatchway, and a rope connected to said counterweight and extending therefrom at an angle downwardly around said stationary deflecting device, thence looped around said movable sheave, and thence vertically and connected at the other end to the car.

4. The combination with an elevator car and a counterweight, of separate terminal stop devices for the respective ends, a plurality of stationary deflecting devices, distinct movable sheaves forsaid stop devices, a plurality of ropes connected between the car and counterweight and each looped around one of said movable sheaves, one of said ropes being inclined downwardly from the car around oneof said stationary deflecting devices, and the other being inclined downwardly from the counterweight around an other of said stationary deflecting devices.

5. The combination with a car, a counterweight, and a pair of stop valves, of means for actuating one of said stop valves at the respective ends of travel of the car and counterweight, said means comprising a movable sheave for each valve, a pair of downwardly looped ropes connected 1 be tween the car and the counterweight and each running around one of said sheaves,

one of said ropes being inclined downwardly from the car and the other inclined clownwardly from the counterweight, and a stationary sheave engaging with the inclined portion of each rope. y

6. The combination with a car, a counterweight and stop valves, of a plurality of downwardly looped ropes connected between the car and counterweight, rope deflecting means including a plurality of fixed sheaves around which said ropes run for actuating one of said stop valves at each end ofthe travel of the car, and valve actuating connections controlled by the deflection of said ropes and located adjacent one end of the stop valve casing.

7. The combination with a 7 car and a counterweight, of a plurality of stoprvalves, a plurality of downwardly looped ropes connected between the car and counterweight, rope deflecting means including a plurality of fixed and movable sheaves for actuating one of said stop valves at each end of the run, and valve actuating connections controlled by said rope deflecting means located adjacent one end of the stop valve casing.

In testimony whereof I aflix my signature, in presence of two witnesses.

KARL E. OSSIAN JANSSON.

lVitnesses:

JULIAN S. VVoos'rER, GEO. AKHOFFMAN.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. 0. 

